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Published August 2020 | Accepted Version
Journal Article Open

A Flexible Spiraling‐Metasurface as a Versatile Haptic Interface


Haptic feedback is the most significant sensory interface following visual cues. Developing thin, flexible surfaces that function as haptic interfaces is important for augmenting virtual reality, wearable devices, robotics and prostheses. For example, adding a haptic feedback interface to prosthesis could improve their acceptance among amputees. State of the art programmable interfaces targeting the skin feel‐of‐touch through mechano‐receptors are limited by inadequate sensory feedback, cumbersome mechanisms, or narrow frequency of operation. Here, a flexible metasurface is presented as a generic haptic interface capable of producing complex tactile patterns on the human skin at wide range of frequencies. The metasurface is composed of multiple "pixels" that can locally amplify both input displacements and forces. Each of these pixels encodes various deformation patterns capable of producing different sensations on contact. The metasurface can transform a harmonic signal containing multiple frequencies into a complex preprogrammed tactile pattern. The findings, corroborated by user studies conducted on human candidates, can open new avenues for wearable and robotic interfaces.

Additional Information

© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: March 4, 2020; Revised: April 18, 2020; Published online: June 18, 2020. The authors are grateful for the fruitful discussions with Dr. Foehr and the financial support from Facebook Inc. Conflict of Interest: O.R.B., V.C., C.D., F.L., and A.I. filed a patent (U.S. Patent No. 10,497,227) on this concept.

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Accepted Version - 2006.10717.pdf


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August 22, 2023
October 20, 2023